Lesson 5 | Midterm

Question 1

Other term for the skin

Answer 1

Cutaneous layer

Question 2

Principal parts of the skin

Answer 2

Epidermis (Superficial)
Dermis (Deep)

Question 3

How many layers does the epidermis have?

Answer 3

Epidermis usually has 4 layers, but under thick skins, STRATUM LUCIDUM is present making it 5

Question 4

Layers of the epidermis

Answer 4

• Stratum Corneum
• Stratum Lucidum
• Stratum Granulosum/ Granular Layer
• Stratum Spinosum/ Spiny Layer
• Stratum Basale

Question 5

2 divisions of the dermis

Answer 5

• Papillary region
• Reticular region

Question 6

Accessory structures of the skin

Answer 6

• Hair
• Skin glands
• Nail

Question 7

Hair is present on most skin surfaces except for —

Answer 7

palms and plantar surfaces of the feet

Question 8

Types of hair

Answer 8

• Vellus hair
• Terminal hair

Question 9

Differentiate vellus and terminal hair in terms of description

Answer 9

VELLUS HAIR: short, fine, pale hair; not very visible

TERMINAL HAIR: long, coarse, heavily pigmented hairs; obviously seen

Question 10

Differentiate vellus and terminal hair in terms of location

Answer 10

VELLUS: All parts of the body except for the scalp, eyebrows, and eyelashes

TERMINAL: Located at the scalp, eyebrows, and eyelashes

Question 11

Types of skin glands

Answer 11

1. Sebaceous (oil) glands
2. Sudoriferous
3. Ceruminous glands
4. Mammary glands

Question 12

Its secreting proteins lie in the dermis and usually open into the neck of a hair follicle

Answer 12

Sebaceous (oil) glands

Question 13

The secreting proteins of sebaceous glands lie in the (1) and usually open into the neck of a (2)

Answer 13

1. dermis
2. hair follicle

Question 14

What does the sebaceous gland secrete?

Answer 14

Sebum

Question 15

Function of the sebum

Answer 15

Oily substance that functions in coating the hair, keeping it from drying (moisture)

Question 16

Sudoriferous releases (1) into (2) or onto the (3) through the opening

Answer 16

1. sweat/ perspiration
2. hair follicles
3. skin surface

Question 17

Modified sweat glands in the external ear that produce a waxy lubricating secretion

Answer 17

Ceruminous glands

Question 18

What do ceruminous glands release?

Answer 18

Ear wax

Question 19

Function of the ear wax

Answer 19

Protects the ear from foreign substances

Question 20

Hard plates of dead cells that form a clear, solid covering

Answer 20

Nails

Question 21

Parts of the nail

Answer 21

1. Nail body/ Nail plate
2. Free edge
3. Nail root

Question 22

• Has a pink tinge as a result of blood vessels underneath
• Clearly visible

Answer 22

Nail body/ Nail plate

Question 23

• May extend past the distal end of the (?)
• No underlying blood vessel is found underneath it thus, a pinkish tinge is absent

Answer 23

Free edge

Question 24

Buried in a fold of skin

Answer 24

Nail root

Question 25

Crescent-shaped area located at the base of the nail

Answer 25

Lunula

Question 26

Description of the nail matrix

Answer 26

Proximal portion deep to the nail, not part od the nail

Question 27

Function of the nail matrix

Answer 27

nail growth

Question 28

2 skin types

Answer 28

1. Thin (Hairy) Skin
2. Thick (Hairless) Skin

Question 29

Distribution of thin and thick skin

Answer 29

Thin: All parts of the body except palm and soles

Thick: Palms and soles

Question 30

Differentiate thin and thick skin in terms of hair follicles

Answer 30

HAIR FOLLICLES
Thin: Present
Thick: Absent

Question 31

Differentiate thin and thick skin in terms of sebaceous glands

Answer 31

SEBACEOUS GLANDS
Thin: Present
Thick: Absent
SUDORIFEROUS GLANDS

Question 32

Differentiate thin and thick skin in terms of sudoriferous glands

Answer 32

SUDORIFEROUS GLANDS
Thin: Fewer
Thick: Most numerous

Question 33

Functions of the integumentary system

Answer 33

1. Thermoregulation
2. Stores blood
3. Protects the body from the external environment
4. — cutaneous sensation
5. Synthesizes vitamin D